The US Mariner 9 was launched – it went on to become the first satellite to orbit Mars.
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The Pioneer 6 space probe was launched atop a Delta-E rocket.
NASA successfully launched the experimental CTS Hermes satellite atop a Delta 2914 rocket.
Russia's Luna 25 lunar lander mission crash-landed on the Moon.
The US Air Force launched the Discoverer 1 reconnaissance satellite.
The Discovery Space Shuttle was launched on the fifth Department of Defense shuttle mission.
